For me, the Evelyne and Halzan have some similarities but they are quite different.
I think for the Evelyne (I have 2 - a bleu electrique and a rouge pivoting) is far more casual. It is wonderful cross body out and about. I loved carrying it on vacation or when shopping since it is completely hands free.
The Halzan, on the other hand, I think just has more versatility. It can be handheld, clutch (although or me the clutch is just too big), shoulder, and cross body. I have a Barenia Halzan and a Etain clemence one - the clemence one is so squishy and flexible - I took it with me to the movies tonight and it just smooshed perfectly in my lap.